如何在Powershell上仅获得服务器的正常运行时间? [英] How to get only the uptime of the server on Powershell?

问题描述

我有以下代码，当我直接在powershell中使用时它可以工作:

I have the following code, It's work when I use directly within powershell:

Get-WmiObject win32_operatingsystem | select @{LABEL=’LastBootUpTime’;EXPRESSION={$_.ConverttoDateTime($_.lastbootuptime)

它返回:

LastBootUpTime
--------------
14/09/2019 10:41:50

但是当我在 Powershell 脚本 .ps1 中使用带有 invoke-command 的命令时，输出会返回更多信息:

But when I use the command within a Powershell script .ps1 with invoke-command the output returns more informations:

LastBootUpTime        PSComputerName RunspaceId                          
--------------        -------------- ----------                          
9/14/2019 10:41:50 AM 192.168.0.20   af08d2d8-c4f1-4f85-9d6c-e3f4ffe475c6

为什么会这样?

如果可能，我也希望没有标题 LastBootUpTime.

If possible, I'd like without the header LastBootUpTime too.

推荐答案

Invoke-Command 将始终返回附加信息，在这种情况下，命令运行的位置和运行空间 ID.您始终可以将结果放入变量中，然后简单地打印出您想要的属性.例如.

Invoke-Command will always return additional information, in this case where the command was run and the runspace id. You can always get results into a variable and simply print out the property you want.E.g.

$result = invoke-command {your-command}
$result.LastBootUpTime

或简称

(invoke-command {your-command}).LastBootupTime

注意，当你使用wmi的时候，你不一定要使用invoke-command，你也可以直接给它传递-computer参数来对远程计算机运行命令:

Note that when you are using wmi, you do not need to necessarily use invoke-command, you can also directly pass -computer parameter to it to run the command against a remote computer:

Get-WmiObject win32_operatingsystem -computer "remote_computer_name"

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